.header{
    width: 100%;
    height: 40px;
    border: 1px solid #eee;
    box-sizing: border-box;
    margin-bottom: 10px;
}
.ipt{
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    outline: none;
    border: 0px;
    text-indent: 1em;
    font-size: 18px;
}